As with capital goods (tangible items such as buildings, machinery, and equipment produced and used in the production of other goods and services), the consumption of a durable good is spread over its life span, which tends to create demand for a series of maintenance services.
The event which is referred to as The Phoenix Lights comprised of a series of incidents, involving a number of different craft and orbs which took place during the evening of March 13th 1997.
The lamp above is a newer halogen used in car headlights. Sylvania has a product called Blue Star which uses a halogen light and filters it to create a blue color. This creates a poorer color rendition than standard tungsten. The deregulation of headlights in cars has lead to more variety in available lamps.